Search Results
Overview
| Uniprot ID | P62266 |
|---|---|
| Protein Name | Small ribosomal subunit protein uS12 |
| Gene Name | RPS23 |
| Organism | Homo sapiens |
Kla Sites from experimental identification
| Position | Flanking peptide |
|---|---|
| 108 | LVAGFGRKGHAVGDI |
| 135 | VSLLALYKGKKERPR |
| 137 | LLALYKGKKERPRS* |
| 21 | RSHRRDQKWHDKQYK |
| 25 | RDQKWHDKQYKKAHL |
| 29 | WHDKQYKKAHLGTAL |
| 37 | AHLGTALKANPFGGA |
| 48 | FGGASHAKGIVLEKV |
| 54 | AKGIVLEKVGVEAKQ |
Function
Component of the ribosome, a large ribonucleoprotein complex responsible for the synthesis of proteins in the cell (PubMed:23636399, PubMed:25901680, PubMed:25957688, PubMed:28257692). The small ribosomal subunit (SSU) binds messenger RNAs (mRNAs) and translates the encoded message by selecting cognate aminoacyl-transfer RNA (tRNA) molecules (PubMed:23636399, PubMed:25901680, PubMed:25957688). The large subunit (LSU) contains the ribosomal catalytic site termed the peptidyl transferase center (PTC), which catalyzes the formation of peptide bonds, thereby polymerizing the amino acids delivered by tRNAs into a polypeptide chain (PubMed:23636399, PubMed:25901680, PubMed:25957688). The nascent polypeptides leave the ribosome through a tunnel in the LSU and interact with protein factors that function in enzymatic processing, targeting, and the membrane insertion of nascent chains at the exit of the ribosomal tunnel (PubMed:23636399, PubMed:25901680, PubMed:25957688). Plays an important role in translational accuracy (PubMed:28257692). Part of the small subunit (SSU) processome, first precursor of the small eukaryotic ribosomal subunit. During the assembly of the SSU processome in the nucleolus, many ribosome biogenesis factors, an RNA chaperone and ribosomal proteins associate with the nascent pre-rRNA and work in concert to generate RNA folding, modifications, rearrangements and cleavage as well as targeted degradation of pre-ribosomal RNA by the RNA exosome (PubMed:34516797)
Protein Sequence
Gene Ontology
| Classification | GO ID | Description |
|---|---|---|
| Cellular Component | GO:0005737 | cytoplasm |
| Cellular Component | GO:0005829 | cytosol |
| Cellular Component | GO:0022626 | cytosolic ribosome |
| Cellular Component | GO:0022627 | cytosolic small ribosomal subunit |
| Cellular Component | GO:0016020 | membrane |
| Cellular Component | GO:0005654 | nucleoplasm |
| Cellular Component | GO:0005840 | ribosome |
| Cellular Component | GO:0005791 | rough endoplasmic reticulum |
| Cellular Component | GO:0032040 | small-subunit processome |
| Cellular Component | GO:0045202 | synapse |
| Molecular Function | GO:0003723 | RNA binding |
| Molecular Function | GO:0003735 | structural constituent of ribosome |
| Biological Process | GO:0002181 | cytoplasmic translation |
| Biological Process | GO:1990145 | maintenance of translational fidelity |
| Biological Process | GO:0042274 | ribosomal small subunit biogenesis |
| Biological Process | GO:0034063 | stress granule assembly |
| Biological Process | GO:0006412 | translation |
Reference
[1] Yang D, Yin J, Shan L, Yi X, Zhang W et al.. Identification of lysine-lactylated substrates in gastric cancer cells.. iScience 25(7):104630. 2022 Jul 15. PMID: 35800753.
[2] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.
[3] Guo X, Ren X, Yan C, Huang H. Quantitative Proteomics Reveals the Role of Lysine Lactylation in Lenalidomide-Resistance in Multiple Myeloma Cells.. ACS Chem Biol 20(7):1728-1738. 2025 Jul 18. PMID: 40590393.
[4] He J, Lai T, Zhou Z, Yang H, Lei Z et al.. Multiomics profiling reveals the involvement of protein lactylation in nonhomologous end joining pathway conferring radioresistance in lung adenocarcinoma cell.. Sci Rep 15(1):24651. 2025 Jul 9. PMID: 40634431.
[5] Wu Q, Li Z, Gong T, Zheng X, Zhou X et al.. Porphyromonas gingivalis infection induces lysine lactylation reprogramming in human umbilical vein endothelial cells.. Front Cell Infect Microbiol 16:1706727. 2026. PMID: 41696360.